package com.ruoyi.framework.security.service;

import javax.annotation.Resource;

import com.alibaba.fastjson2.JSON;
import com.alibaba.fastjson2.JSONObject;
import com.ruoyi.common.exception.base.BaseException;
import com.ruoyi.common.utils.http.HttpUtils;
import com.ruoyi.framework.sms.SmsCodeAuthenticationToken;
import com.ruoyi.framework.web.domain.AjaxResult;
import com.ruoyi.project.system.domain.SMSResult;
import com.ruoyi.project.system.domain.SysBlacklist;
import com.ruoyi.project.system.mapper.SysBlacklistMapper;
import com.ruoyi.project.system.service.SmSMSService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.BadCredentialsException;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.stereotype.Component;
import com.ruoyi.common.constant.CacheConstants;
import com.ruoyi.common.constant.Constants;
import com.ruoyi.common.constant.UserConstants;
import com.ruoyi.common.exception.ServiceException;
import com.ruoyi.common.exception.user.BlackListException;
import com.ruoyi.common.exception.user.CaptchaException;
import com.ruoyi.common.exception.user.CaptchaExpireException;
import com.ruoyi.common.exception.user.UserNotExistsException;
import com.ruoyi.common.exception.user.UserPasswordNotMatchException;
import com.ruoyi.common.utils.DateUtils;
import com.ruoyi.common.utils.MessageUtils;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.common.utils.ip.IpUtils;
import com.ruoyi.framework.manager.AsyncManager;
import com.ruoyi.framework.manager.factory.AsyncFactory;
import com.ruoyi.framework.redis.RedisCache;
import com.ruoyi.framework.security.LoginUser;
import com.ruoyi.framework.security.context.AuthenticationContextHolder;
import com.ruoyi.project.system.domain.SysUser;
import com.ruoyi.project.system.service.ISysConfigService;
import com.ruoyi.project.system.service.ISysUserService;

import java.util.Set;
import java.util.concurrent.TimeUnit;

import static com.ruoyi.common.utils.uuid.UUID.generateValidateCode;
import static com.ruoyi.framework.web.domain.AjaxResult.error;
import static com.ruoyi.framework.web.domain.AjaxResult.success;

/**
 * 登录校验方法

 */
@Component
@Slf4j
public class SysLoginService {
    @Autowired
    private TokenService tokenService;

    @Resource
    private AuthenticationManager authenticationManager;

    @Autowired
    private RedisCache redisCache;

    @Autowired
    private ISysUserService userService;

    @Autowired
    private ISysConfigService configService;

    @Autowired
    private SmSMSService smSMSService;

    @Autowired
    private SysBlacklistMapper sysBlacklistMapper;


    public AjaxResult sendVerifyCode(String mobile) {
        if (redisCache.hasKey(CacheConstants.CAPTCHA_CODE_KEY + mobile)) {
            return error(4002, "上次验证码还在有效期内");
        }
        String verifyCode = generateValidateCode();         // 随机生成6位数验证码
        log.info("向 " + mobile + " 发送验证码：" + verifyCode);
        SMSResult smsResult = smSMSService.sendVerifyCode(mobile, verifyCode);
        if (smsResult.isSuccess()){
            redisCache.setCacheObject(CacheConstants.CAPTCHA_CODE_KEY + mobile, verifyCode, Constants.CAPTCHA_EXPIRATION, TimeUnit.MINUTES);
            return success("发送成功");
        }
        return error(4000, smsResult.getMsg());
    }

    public AjaxResult checkVerifyCode(String mobile, String code) {
        String verifyKey = CacheConstants.CAPTCHA_CODE_KEY + mobile;
        String captcha = redisCache.getCacheObject(verifyKey);
        if (StringUtils.isEmpty(captcha)) {
            return error(4002, "验证码失效");
        }
        if (!code.equalsIgnoreCase(captcha)) {
            AsyncManager.me().execute(AsyncFactory.recordLogininfor(mobile, Constants.LOGIN_FAIL, MessageUtils.message("user.jcaptcha.error")));
            throw new CaptchaException();
        }
        redisCache.deleteObject(verifyKey);
        return success();
    }

    /**
     * 登录验证
     *
     * @param username 用户名
     * @param password 密码
     * @param code     验证码
     * @param uuid     唯一标识
     * @return 结果
     */
    public String login(String username, String password, String code, String uuid) {
        // 验证码校验
        validateCaptcha(username, code, uuid);
        // 登录前置校验
//        blackListCheck(username);
        loginPreCheck(username, password);
        // 用户验证
        Authentication authentication;
        try {
            UsernamePasswordAuthenticationToken authenticationToken = new UsernamePasswordAuthenticationToken(username, password);
            AuthenticationContextHolder.setContext(authenticationToken);
            // 该方法会去调用UserDetailsServiceImpl.loadUserByUsername
            authentication = authenticationManager.authenticate(authenticationToken);
        } catch (Exception e) {
            if (e instanceof BadCredentialsException) {
                AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("user.password.not.match")));
                throw new UserPasswordNotMatchException();
            } else {
                AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, e.getMessage()));
                throw new ServiceException(e.getMessage());
            }
        } finally {
            AuthenticationContextHolder.clearContext();
        }
        AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_SUCCESS, MessageUtils.message("user.login.success")));
        LoginUser loginUser = (LoginUser) authentication.getPrincipal();
        recordLoginInfo(loginUser.getUserId());
        // 生成token
        return tokenService.createToken(loginUser);
    }

    public String verifyCodeLogin(String username, String code) {

        String verifyKey = CacheConstants.CAPTCHA_CODE_KEY + username;
        String captcha = redisCache.getCacheObject(verifyKey);
        redisCache.deleteObject(verifyKey);
        if (!code.equalsIgnoreCase(captcha)) {
            AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("user.jcaptcha.error")));
            throw new CaptchaException();
        }
        blackListCheck(username);
        // 用户验证
        Authentication authentication;
        try {
            // 该方法会去调用UserDetailsServiceImpl.loadUserByUsername
            SmsCodeAuthenticationToken authenticationToken = new SmsCodeAuthenticationToken(username);
            AuthenticationContextHolder.setContext(authenticationToken);
            authentication = authenticationManager.authenticate(authenticationToken);
        } catch (Exception e) {
            if (e instanceof BadCredentialsException) {
                AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("user.password.not.match")));
                throw new UserPasswordNotMatchException();
            } else {
                AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, e.getMessage()));
                throw new ServiceException(e.getMessage());
            }
        } finally {
            AuthenticationContextHolder.clearContext();
        }
        AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_SUCCESS, MessageUtils.message("user.login.success")));
        LoginUser loginUser = (LoginUser) authentication.getPrincipal();
        recordLoginInfo(loginUser.getUserId());
        // 生成token
        return tokenService.createToken(loginUser);
    }

    /**
     * 登录黑名单与IP校验
     *
     * @param username 用户名
     */
    public void blackListCheck(String username) {
        // 检验数据库黑名单
        String[] labelsList = sysBlacklistMapper.selectLabelsListByMobile(username);
        if (labelsList != null && labelsList.length > 0) {
            throw new BaseException("禁止登录");
        }
        //  检验区域黑名单
        Set<String> blackRegion = redisCache.getCacheSet("blackRegion");
        String ip = IpUtils.getIpAddr();
//        String ip = "222.169.41.0";
        String city;
        try {
            String sendGet = HttpUtils.sendGet("https://webapi-pc.meitu.com/common/ip_location?ip=" + ip);
            JSONObject returnIfo = JSON.parseObject(sendGet);
            city = returnIfo.getJSONObject("data").getJSONObject(ip).getString("city");
            log.warn("IP:" + ip + " 城市:" + city);
        } catch (Exception e) {
            e.printStackTrace();
            return;
        }
        for (String bp : blackRegion) {
            if (bp.contains(city)) {
                throw new BaseException("此地区暂未开放");
            }
        }
    }

    /**
     * 登录前置校验
     *
     * @param username 用户名
     * @param password 用户密码
     */
    public void loginPreCheck(String username, String password) {
        // 用户名或密码为空 错误
        if (StringUtils.isEmpty(username) || StringUtils.isEmpty(password)) {
            AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("not.null")));
            throw new UserNotExistsException();
        }
        // 密码如果不在指定范围内 错误
        if (password.length() < UserConstants.PASSWORD_MIN_LENGTH || password.length() > UserConstants.PASSWORD_MAX_LENGTH) {
            AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("user.password.not.match")));
            throw new UserPasswordNotMatchException();
        }
        // 用户名不在指定范围内 错误
        if (username.length() < UserConstants.USERNAME_MIN_LENGTH || username.length() > UserConstants.USERNAME_MAX_LENGTH) {
            AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("user.password.not.match")));
            throw new UserPasswordNotMatchException();
        }
        // IP黑名单校验
        String blackStr = configService.selectConfigByKey("sys.login.blackIPList");
        if (IpUtils.isMatchedIp(blackStr, IpUtils.getIpAddr())) {
            AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("login.blocked")));
            throw new BlackListException();
        }
    }

    /**
     * 校验验证码
     *
     * @param username 用户名
     * @param code     验证码
     * @param uuid     唯一标识
     * @return 结果
     */
    public void validateCaptcha(String username, String code, String uuid) {
        boolean captchaEnabled = configService.selectCaptchaEnabled();
        if (captchaEnabled) {
            String verifyKey = CacheConstants.CAPTCHA_CODE_KEY + StringUtils.nvl(uuid, "");
            String captcha = redisCache.getCacheObject(verifyKey);
            redisCache.deleteObject(verifyKey);
            if (captcha == null) {
                AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("user.jcaptcha.expire")));
                throw new CaptchaExpireException();
            }
            if (!code.equalsIgnoreCase(captcha)) {
                AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("user.jcaptcha.error")));
                throw new CaptchaException();
            }
        }
    }

    /**
     * 记录登录信息
     *
     * @param userId 用户ID
     */
    public void recordLoginInfo(Long userId) {
        SysUser sysUser = new SysUser();
        sysUser.setUserId(userId);
        sysUser.setLoginIp(IpUtils.getIpAddr());
        sysUser.setLoginDate(DateUtils.getNowDate());
        userService.updateUserProfile(sysUser);
    }
}
